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Validate decimal numbers in JavaScript - IsNumeric()
...uldn't be considered as "numeric").
I think is worth sharing this set of +30 unit tests made to numerous function implementations, and also share the one that passes all my tests:
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
P.S. isNaN & isFinite have a ...
Why is Python 3.x's super() magic?
In Python 3.x, super() can be called without arguments:
1 Answer
1
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List all the files that ever existed in a Git repository
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138
This is a simplified variation of Strager's solution:
git log --pretty=format: --name-status |...
C/C++ line number
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edited May 17 '10 at 16:03
answered May 17 '10 at 14:27
Ju...
How does Python's super() work with multiple inheritance?
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733
This is detailed with a reasonable amount of detail by Guido himself in his blog post Method Re...
Viewing all defined variables [duplicate]
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376
A few things you could use:
dir() will give you the list of in scope variables:
globals() wi...
In .NET, which loop runs faster, 'for' or 'foreach'?
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365
Patrick Smacchia blogged about this last month, with the following conclusions:
for loo...
TypeError: method() takes 1 positional argument but 2 were given
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394
In Python, this:
my_object.method("foo")
...is syntactic sugar, which the interpreter trans...
理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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When executed, this will result in:
运行代码，输出如下
bash-3.2$ ./with_example01.py
In __enter__()
sample: Foo
In __exit__()
As you can see, The __enter__() function is executed The value returned by it - in this case "Foo" is assigned to sample The body of the block is executed,...
Does the Java &= operator apply & or &&?
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edited Feb 3 at 0:26
answered Oct 11 '10 at 14:49
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